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Max Gear is recommended for use in truck and automotive front or rear differentials, manual transmissions and lower gear units of marine engines that specify use of an API GL-5 or GL-4 fluid. It is non-corrosive to soft yellow metals (brass, bronze, copper, etc.) and synchronizer safe. Specially designed to extend gear and bearing life, Max Gear provides superior corrosion protection over competing conventional and synthetic gear oils.

Max Gear makes gears run smoother, quieter, cooler and longer without overhauls. A direct reduciton of drag in the drive train has huge advantage for trucks and other 4-wheel drive vehicles: better gas mileage. Max Gear is formulated with a friction modifier additive – no additional additives are necessary.

Max Gear is available in the following viscosities: 75W-90, 75W-140, 80W-90, 85W-140 and SAE 90

Qweesy,

Your posts are nothing more than a cut and paste from a RP marketing sales-hype brochure. They "claim" it's better than "everything" and recommend using it in "everything", without conducting any certified testing. Heck, why not....it's purple!! You can't beat that, right?????????????????????????????????????

Do you understand the difference between "recommended" vs "approved"?? In this case, RP is recommending a product that is NOT approved for use. RP max gear has not been tested or verified to meet minimum specs. Nobody knows if it will provide superior performance (improve transmission lifecycle) but it may reduce life.

I care about my Ford car and couldn't care less about the popularity of Ford oils or Ford stock pricing. My transmissions never fail yet they see many road race track miles at WOT. I rebuild Getrag transmissions and some of those failures directly resulted from the use of the wrong fluids.

I never said that ALL GL-5 spec lubricants will cause excessive yellow metal corrosion. This has not been determined thru controlled mfr testing so one can only guess or choose to believe RP's broad-brush claims (which are not application-specific). For a given mfr, GL-5 lubricants do generally contain more corrosive anti-wear agents than GL-4 rated lubricants. I also never said that all 75W-90 fluids are GL-5 rated. Those specs are totally unrelated. You are arguing against statements I never made. Please use the quotation feature if you wish to dispute something that I said instead of twisting and distorting points.

I am only arguing against the use of non-approved lubricants in street cars that don't explicitly meet or exceed mfr specs. Although a large number of willing guinea pigs are trying it, the compatibility of RP max gear product with the 5 or 6 spd Ford Focus manual tranny is an "unknown". Good luck, but hey, I recommend against it when factory-recommended premium lubes are sold. There is simply no need to experiment with lubes that have not been tested to meet minimum specs.

For the record, my current vehicles which include BMW 5er v8, Fusion 2.0 ecoboost and Focus all have Mobil 1 Extended in the engine sump, not Motorcraft semi-syn oil. Mobil 1 meets all Ford and BMW engine specs so I use it in my motors. I am definitely not a Motorcraft lube fanboy. For street vehicle use, I have run RP, Castrol, Mobil. Pennzoil and lubricants from many other mfrs, but only in cases where the lube meets or exceeds specs which have been established by the equipment manufacturer. You, sir, must own RP stock. My father owns about $50K of Chevron stock if that means anything lol.

05-06-2014 09:16 PM

macdiesel

I'm even putting the ford honey in my mazdaspeed 3.

05-06-2014 06:28 PM

qweesy

Straight from the horses mouth over at RP

Ive been using 75w90 in my 2004 SVT focus Getrag 285 6 speed I know a while back y'all started to recommend your 10w40 motor oil instead..... but the ford manual trans fluid spec sheets states XT5 is a 75w90 gear oil..... What should I run?

The HPS and XPR 10W-40 oils will provide better cold flow than the 75W-90, but still be about the same viscosity when at operating temperature (gear oil visc. grade and motor oil visc. grades are different scales). If you are having good results with Max Gear 75W-90, there is little reason to change. If you are in a colder climate and cold shift effort is noticeably higher than when the transmission is warmed up, switching to HPS 10W-40 or XPR 10W-40 should improve shifting.

Thank you for contacting Royal Purple. We hope to hear from you again
RPTech1

05-06-2014 11:51 AM

qweesy

piss on lscman and his scare tactics, he doesn't know jack shit, like Tom said dude must have ford stock..... even motocrafts XT5 (Ford Honey) spec sheet claims its a 75w90.

Max Gear is recommended for use in truck and automotive front or rear differentials, manual transmissions and lower gear units of marine engines that specify use of an API GL-5 or GL-4 fluid. It is non-corrosive to soft yellow metals (brass, bronze, copper, etc.) and synchronizer safe. Specially designed to extend gear and bearing life, Max Gear provides superior corrosion protection over competing conventional and synthetic gear oils.

Max Gear makes gears run smoother, quieter, cooler and longer without overhauls. A direct reduciton of drag in the drive train has huge advantage for trucks and other 4-wheel drive vehicles: better gas mileage. Max Gear is formulated with a friction modifier additive – no additional additives are necessary.

Max Gear is available in the following viscosities: 75W-90, 75W-140, 80W-90, 85W-140 and SAE 90

05-06-2014 01:31 AM

DannyG

Well from what I read online Ford actually poured the Mercon V ATF into this car from the factory. And having the SVT group confirm to a guy on the forums that the mercon v is the right stuff, I decided to go with that. Interesting enough though, I got something even different. The mercon v part # is XT5-QSM, my local dealer sold me XT2-QSM... and it had the XT5 part number written on a piece of tape and slapped on the front of the jug. Wouldn't be a concern except that this fluid is only "mercon" rated, not "mercon V". Asked them about that, but they said they updated this fluid to the XT5 and that its the same.. so I bought their last 3 jugs for $12.66 a quart and called it a day! Have photo's of the bottles if anyones interested...

04-29-2014 12:18 AM

sailor

A lot of fluids have been used without obvious issues, some are absolutely bad (like hypoid gear oil).

Since the Getrag isn't readily rebuildable (if at all) sticking to the current Ford recommended trans. fluid might be smart. (Synthetic MTF)

04-28-2014 11:43 PM

sleepyboy

The synthetic manual transmission fluid has a blue hue to it, ATF would be red. In my little hand book that came with my SVT it specifically list the synthetic manual transmission fluid. The Mercon V ATF fluid was meant for the MTX-75 which was later switched over to the same Synthetic Manual Transmission fluid that is used by the SVT.

If you look at the link you posted it specifically says Motorcraft Full Synthetic Manual Transmission fluid, then a period and under that is says Mercon V. You can use either but we suggest the synthetic manual trans fluid as ford stopped saying to put the Mercon V in the regular Zetecs and to use the other fluid.

Not saying that the person who called SVT is wrong but I would want to hear it from them personally. Especially after being on here so long and this is the first time I ever heard someone say that.

Also, I drained my fluid since I took the entire tranny out with the engine for a rebuild... The old fluid from the transmission was a dark purple/blue.. Any idea what fluid was previously used based from the color? I personally don't know which fluids are which color, and I'm really curious to know now!

04-28-2014 11:23 PM

DannyG

Quote:

Originally Posted by sleepyboy

There is a Huge difference. Mercon V is automatic transmission fluid which has detergents in it, where as the Motorcraft Full Synthetic manual transmission fluid does not (as far as I know) and is more like regular gear oil just fully synthetic.

Interesting... There is a service manual on another thread that has the Mercon V ATF as a recommended fluid AND a member of the other thread actually called Ford SVT Team and they confirmed that this ATF is the proper fluid for the SVT Getrag tranny. Which would justify the RP syncromesh (being a substitute for ATF apllication fluids, as said on their website). I JUST WANT TO KNOW WHICH ONE TO BUY DAMN IT!

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